baber/WOPTO huggingface dataset:
Patent GB-675461-A (GB)
Title: Improvements in or relating to acid pickling baths
IPC: C23G1/00
Filed: 1950-11-20
Abstract: A pickling bath comprises three super-imposed layers, at the bottom an acid, e.g. nitric acid, at the top an alkali, e.g. caustic soda solution, and the intermediate layer a substance not affected by acid or alkali, e.g. trichlorethylene, chlorobenzene, or chloropyridine to which benzene may be added.  The specific gravity of each layer is maintained less than that of the layer below it.  The bath is stated to prevent the formation of noxious fumes.
Patent GB-362056-A (GB)
Title: Improvements in or relating to radio apparatus
Filed: 1930-09-23
Abstract: 362,056. Wireless receiving apparatus. SPARKSWITHINGTON CO., Jackson, Michigan, U.S.A.-(Assignees of Scofield, T. J. ; and Miner, W. D. ; of Sparks-Withington Co., Jackson, Michigan, U.S.A.) Sept. 23, 1930, No. 28437. Convention date, Oct. 30, 1929. [Class 40 (v).] In a variable condenser, shown as comprising a ganged series 1, 2, mounted on a shaft 5, each condenser except the first has the stator 2 secured to an anchor plate 13 which has a projecting shelf forming one plate of a trimming condenser. The co-operating plate of the trimmer is separated from the shelf by mica strips 22 and is formed of a spring strip 20 secured to a bracket 21, held to an insulating strip 17 on the mounting of the main condensers. Adjustment is effected by a nut 25 on a screw 15 compressing the spring plate 20 to a greater or less extent. The first condenser has in series an aerial condenser of similar construction mounted on a bracket 31 and provided with an aerial terminal 35 connected to a lower plate resting on an insulating plate 32. The spring plate 37 is adjusted by means of a screw 39 and is connected to the input end of the tuner unit. The tuner unit and an amplifier unit 55 may be connected appropriately by means of a spring clasp 62 on one unit adapted to receive a pin connector 45 attached to the other unit. In the example the tuner unit comprises a number of tuned circuits through which the signal passes before it reaches the untuned amplifier circuits. Specifications 352,822, [Group XXXV], and 358,700, [Group XXXVI]. are referred to.
Patent GB-616936-A (GB)
Title: Improvements in coat collars
IPC: A41D27/18
Filed: 1946-09-24
Abstract: 616,936. Coat collars. HAMMERSLEY, S. H. Sept. 24, 1946. No. 28489. [Class 141] The outer and under layers 2, i of a coat collar are formed of a single piece of material which is folded on the line 5, the fold forming the outer edge of the collar. Before folding, a layer of canvas cut on the bias is sewn to the part 1 and the latter is shrunk by ironing to curve the fold line. After folding, the two layers are secured togethe and again folded on the line 4, the part below this line constituting the stand of the collar.
Patent GB-408668-A (GB)
Title: Improvements in and relating to wall plugs and similar fastening devices
IPC: F16B13/06
Filed: 1932-10-12
Abstract: 408,668. Wall plugs. NORMAN, C. R., Teviotdale, and HARRISON, F. H., Eskdale, Silverdale Road, both in Burgess Hill, Sussex. Oct. 12, 1932, No. 28506/32 and 3411 /33. [Class 89 (i).] A tubular wall plug has slots 41 to engage the threads of the screw, which, due to its end thrust collapses the tube at its weakened portions 42. In a modification the plug is formed of two halves, each having grooves 77 to receive the screw thread and weaking slots 78.
Patent GB-1520294-A (GB)
Title: Method and device for determination of the location of a fault on a conductor
IPC: H02H3/00
Filed: 1975-07-07
Abstract: 1520294 Locating faults on lines BBC BROWN BOVERI & CO Ltd 7 July 1975 [8 July 1974] 28549/75 Heading H2K The direction of, or distance to, a fault on a line relative to a reference point x = Z R  is determined while the fault is occurring by deriving, signals a(O,t), b(O,t) representing the incident and reflected travelling waves on the line at a monitoring point x = 0 and determining the time shift between them, this being directly proportioned to the distance Z between x = 0 and the fault. The time shift is determined by evaluating approximations A 1 , A 2 , B 1 , B 2  to the values of Fourier transforms of the travelling wave signals a(O,t), b(O,t), at a specific (but essentially arbitrary) frequency and computing at least the sign of the function. (where a = propagation constant) or a mathematically equivalent sine function. For a single phase line, the travelling wave signals a(O,t), b(O,t) are derived by computing v m  Œ i m R w , where v m , i m  are the line voltage and current and R w  the characteristic impedance. If the reference point x = Z R  is not at x = 0, time shifts must be introduced into the computation of the Fourier approximations for the reflected wave b(O,t). To determine whether the fault is within a given section, the computations may be carried out for two reference points, corresponding to the beginning and end of the section, and the sign of A 1 B 2 -A 2 B 1  determined for each : if the signs differ, the fault is inside the section, otherwise it must be outside. For phase-phase faults on a polyphase line, equivalent phase-phase quantities may be used throughout.
Patent GB-423024-A (GB)
Title: Improvements in and relating to trousers and other garments to be secured round the waist
IPC: A41F9/02
Filed: 1934-10-05
Abstract: 423,024. Trousers, skirts, &c. HAKANSSON, V. G. J., Bollebygd, Sweden. Oct. 5, 1934, No. 28588. [Class 141] Trousers, sports-skirts, or other garments secured round the waist are slit downwards at 2 from the waist-band at each side and the edges of the back portion of the garment are arranged inside the rear edges of the front portions so that girth adjustments can be made without puckering. Adjustment is effected by strap portions 3, 4 which are fixed at their rear ends 5 and extend through sleeves 6 on the front portions of the garment, and by supplementary straps 7 which are fixed to the rear portion of the trousers at the top of the side slits 2 and extend forwards through openings in the front portion and are secured to the straps 3, 4. Linings 8 may be secured to the front and back portions adjacent the side slits to form pockets.
Patent GB-1501068-A (GB)
Title: Desalinization distilling plant combined with a steam power plant
IPC: C02F1/16
Filed: 1976-07-09
Abstract: 1501068 Desalinization distillation/steam power plant N AZHARI 9 July 1976 [12 July 1975] 28729/76 Heading BIB A combined desalinization/steam power plant comprises a multistage flash evaporator 3, a steam turbine 27 and associated boiler 26 driving an electric-generator 28 and a compressor 16 and a falling-film evaporator 14. A mixture of seawater and concentrated brine which has previously passed through the plant is passed from the cooling coils 10 of the flash evaporator, if necessary via an auxiliary heater 12 heated by steam from the turbine, to the falling-film evaporator 14 wherein part is evaporated and the resulting vapour compressed in the compressor 16 and fed to the heating chamber 43 of 14, if necessary after mixing with cooling water at 18, to provide heat for the evaporation therein. Water condensing in the heating chamber is fed to the distillate trays 21 of the multistage flash evaporator 10 via line 19 and unevaporated brine from 43 is fed to the flash evaporator via line 20 and evaporated therein under reduced pressure produced by steam ejector 36.
Patent GB-228652-A (GB)
Title: Improvements in or relating to thermally controlled valves
IPC: G05D23/02
Filed: 1923-11-14
Abstract: 228,652. Spencer, A. L. H., and Spencer-Bonecourt, Ltd. Nov. 14, 1923. Thermostats.-A thermostatically controlled valve particularly applicable for controlling the supply of gas to gas heaters for steam boilers, steam superheaters, air and water heaters and the like and of the type in which a diaphragm main valve is actuated by fluid pressure under the control of a pilot valve has the diaphragm chamber fitted with an adjustable bye-pass K<0> to permit the passage of sufficient gas to maintain the main burner always alight. The thermostatic device comprises a pair of concentric tubes M, N adjustably connected to the body A of the heater one at each end. At their free ends the tubes are slotted to receive a multiplying lever L adapted to bear against an adjustable abutment H<0> on the spindle of the pilot valve G. The lever L is provided with a knee joint Y normally held in the straight position by an adjustable spring L<2> and passes through a bracket O<1> fitted with a spring stop O. The auxiliary valve is normally held to its seat by a spring H adjusted by a nut H<1>, but when opened by the thermostat it admits inlet pressure to the back of the diaphragm E via ports D<2>, F<1> and pipe G<0>. The diaphragm is then closed by its own weight or elasticity or by a weight or spring load. To enable the valve to open when the pilot valve is closed the cover F is provided with a vent leading to atmosphere or a burner I. To maintain this burner alight in spite of the intermittent working of the apparatus, a bye-pass J controlled by a screwed member J<1> is provided. A fluid o:her than that passing through the valve may be employed for actuating purposes.
Patent GB-1278294-A (GB)
Title: Spring pressure plate
IPC: H01R39/26
Filed: 1969-06-06
Abstract: 1278294 Electric brushes UNION CARBIDE CORP 6 June 1969 [7 June 1968] 28755/69 Heading H2A An electric carbon brush assembly (10), Fig. 1, comprises a spring pressure plate (12) having either integral or secured together first and second parts 16, 20 of which the first part is slidable into a mating female groove 22 in a side wall of a carbonaceous brush 14, 28 so as to be retained therein against movement perpendicular to the sliding plane, and it has a resilient protruding portion 18 which projects into a recess 24 within the groove to secure the plate against movement parallel to the sliding plane. The groove and first part may be dovetailed, and the portion 18 or the whole plate may be, made of nylon, plastics, fibre glass, Hylafil, or resilient steel or Al alloys. A cushioning pad 26 may be provided between the brush and plate, and the plate may have other shapes, e.g. the U-shape of Fig. 6 to accommodate a plurality of brushes.
Patent GB-1459344-A (GB)
Title: Removing solvent from elastomers
IPC: C08F6/00
Filed: 1974-06-28
Abstract: 1459344 Removing solvent from elastomers SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 20 June 1975 [28 June 1974] 28798/74 Heading C3P A process for removing a C 6 -C 7  hydrocarbon solvent from an elastomer composition comprises mixing a pentane with the composition after polymerization and prior to evaporation in a devolatilization zone under such conditions of temperature and pressure, that the solvent evaporates. Evaporation may be effected for example, in a flash chamber or devolatilizing extruder. The solvent removed may comprise cyclohexane, benzene and/or toluene, or a mixture of cyclohexane and isopentane. The elastomer composition may be a cement, from which a major proportion of the solvent may be flashed, after which the pentane is added, and further devolatilization effected in an extruder. Suitable pentanes are n-pentane and isopentane. Elastomers specified are butadiene polymers.
Patent GB-1092436-A (GB)
Title: Hollow plastics articles and process of making same
IPC: B29C48/09
Filed: 1965-07-07
Abstract: 1,092,436. Extrusion nozzles. E. GABBRIELLI. July 7, 1965 [July 10, 1964; July 17, 1964], No. 28830/65. Heading B5A. [Also in Division F2] An extrusion die for the production of hollow plastics articles comprises a stationary housing 9 (top half of Fig. 1) within which rotates a core 5, 8, and a nozzle 12 comprising an annular die member 3 and nozzle core 1 which remain substantially stationary relative to one another during the extrusion process. Passage of material between housing 9 and core 8 causes molecular orientation of the material transverse to the direction of extrusion and in the embodiment shown annular member 3 is stationary. Initially, nozzle core 1 is held against core 5, 8 by a rod 7, a sliding seal being formed at 14. According to the invention, once extrusion is proceeding a rearwards thrust by the material at 16 holds nozzle core 1 in sealing engagement with core 5, 8 and core 1 is essentially selfcentring. In a second embodiment, Fig. 2 (upper-half referred to), nozzle core (1) is secured to rotate with core (5, 8) and in this case annular member (3) rotates and is held against an extension (11) of housing (9) by rearwardly directed forces derived from the extruding material. Rotation of member (3) may result from frictional engagement with the material although a motor may be necessary to equalize the rotational speeds of member (3) and nozzle core (1). With this arrangement the extrudate rotates and facilitates the application of linings, reinforcing fibres or metal threads, or decoration of the outer surface. The extrusion may be effected by ram or screw and in the latter case core 8 may rotate therewith with nozzle core 1 being independently driven.
Patent GB-761375-A (GB)
Title: Improvements in or relating to circuits for cathode ray oscilloscopes
Inventor: BEALE EVELYN STEWART LANSDOWNE
IPC: G01R13/28
Filed: 1953-10-20
Abstract: 761,375. Cathode-ray oscilloscopes; multistable stato circuits. STANDARD TELEPHONES & CABLES, Ltd. Oct. 20, 1953, No. 28928/53. Addition to 679.768 [Group XXXVI]. Classes 40(6) and 40(7) Relates to an arrangement for displaying two signals on a single-beam cathode-ray oscilloscope as disclosed in the parent Specification in which the signals are applied respectively to opposite Y plates of the tube via alternatively operative gate circuits controlled respectively by two push-pull square switching waves of higher frequency than the timebase generated by a multivibrator, the relative phase of the switching waves being reversed during successive timebase periods so that the portions of any one signal displayed on successive timebases are interlaced. According to the present invention the multivibrator is free running and is cut off for a predetermined short period at the commencement of each timebase by two interlaced trains of negative pulses applied respectively to the two valves of the multivibrator, the pulse trains being derived respectively from the push-pull outputs from a two-stable-stato trigger circuit triggered by the sweep voltage so that the switching always beings at the same time after the start of the timebase even if the timebase recurrence frequency is irregular as when the oscilloscope is used as an engine indicator. As shown the anodes of the trigger circuit V1a, V1b are coupled to the grids of the multivibrator valves V3a, V3b via triodes V2a and V2b which are normally cut off. A positive pulse at the anode of V1a generated during one t-imebase sweep is differentiated by C1 R1, the resultant peaky wave rendering V2a conductive and V3a cut-off for a period equal to about three half cycles of the multivibrator frequency after which the multivibrator functions normally. During the next timebase sweep, V3b is cut off in a similar manner by the positive pulse from the anode of V1b. The trigger circuit is triggered by applying the timebase sweep waveform to the anodes of V1a and V1b via a differentiating circuit C5, R5 and the frequency of the multivibrator is controlled by adjusting the grid voltages of V3a and V3b. Alterriatively V1 could be coupled to V3 via C1, R1 and C2, R2 and a pair of rectifiers. The Specification also refers to the use of a switching waveform synchronized with the timebase and having a frequency equal to an odd multiple of half the timebase frequency.
Patent GB-912082-A (GB)
Title: Improvements in and relating to the preparation of isoprene and acetic acid
IPC: C07C1/213
Filed: 1960-08-22
Abstract: Isoprene and acetic acid are obtained from 3-methyl-3-butene-1-ol acetate or isoprene glycol diacetate by passing in the vapour phase at 200-450 DEG C. over silica-alumina or silica-alumina with one or more oxides of Li, Na, K, Cu, Be, Mg, Ca, Zn, Sr, Cd, Ba, B, Ti, Zr, Pb, Cr, Mo, Mn, Fe, Co or Ni.  The pressure of the acetates is preferably below 300 mm. Hg. by using reduced pressure or mixing with hydrogen, nitrogen, carbon dioxide or C2-C4 hydrocarbons.  The LHSV may be 1-20 vol./hr./vol. for 3-methyl-3-butene-1-ol or 1-10 vol./hr./vol. for isoprene glycol diacetate.  The catalyst may be as pellets in a fixed bed or used as a fluidised bed.
Patent GB-907550-A (GB)
Title: Gyratory separator
IPC: B07B1/38
Filed: 1960-08-22
Abstract: 907,550. Screening apparatus. DRUMMOND, P. (Separator A.B.). Aug. 22, 1960, No. 28948/60. Class 117. [Also in Group I] A sieve box 17 which may be used in separating solids from liquids, is supported on a stationary base frame 16 by circumferentially spaced springs 18, and is given a progressively tilting and circular motion by a motor 55 which drives a shaft 57 supported in axially aligned bearings in a casing 60 vertically adjustable in a clamp 62 secured to the frame. An eccentric connection, the eccentricity of which is selectively variable, is provided between the top of the drive shaft and a selfaligning bearing 64 adjustably positioned within a housing 63 depending from the sieve box. The cylindrical portion 66 of the shaft extending within the bearing is eccentric to the shaft and is surrounded by a collar 72 slidably and rotatably adjustable thereon, the collar having an eccentric cylindrical surface 74. A key 78 on the portion 66 engages the desired one of a number of grooves 75 in the collar to vary the eccentricity of the drive connection. The edges of the screen 48 are secured between the flanges of the cylindrical upper and lower portions of the box, and the screen centre is held by a nut and bolt 50. Material fed to the box flows from the centre outwardly, and discharge duets 45 and 36 are provided. Several box sections may be superposed. In the modification of Figs. 6, 7, 9 and 10, the top end 126 of the drive shaft 112 is coaxial with the shaft, and the eccentric connection consists of inner and outer sleeves 129, 130 around the shaft, their cylindrical outer surfaces being eccentrically arranged relative their inner cylindrical surfaces. The sleeves rotate with the shaft, and adjustment of the eccentric connection between the shaft and the selfaligning bearing 127 is effected by turning the sleeves relative to one another. For the latter purpose the sleeves have opposed flanges 135, 142, Fig. 9, with teeth 143, 144 engaged by a pinion gear 150 on a shaft 151 mounted in bearings in a bracket carried by an assembly 155 which rotates with the shaft. The pinion gear is rotated to the desired position and locked therein by a set screw 151b. The drive shaft is supported in bearings in a sleeve wall 109 adjustably clamped in a wall 104 supported by radial members 107 extending from the fixed frame. The shaft is driven from a pulley 121, and in order to control the vibrations imparted to the sieve box by the shaft an assembly 155 comprising an eccentric weight within covers 169, 170 rotates with the shaft. The eccentricity of the weight is adjustable. The weight comprises a frame 158 with openings filled with heavy material, e.g. lead, and is slidably related to a block 163 keyed to the shaft and is held in the desired position by a bolt 174. A similar assembly 180, but of small size, is provided on the drive shaft to prevent or reduce vibrations being imparted to the stationary frame.
Patent GB-603851-A (GB)
Title: Improved load control and indicator system for engine-electric locomotives
IPC: B60L3/12
Filed: 1945-11-01
Abstract: 603,851. Transmitting mechanical power. GENERAL MOTORS CORPORATION. Nov. 1, 1945, No. 28970. Convention date, Nov. 6, 1944. [Class 38 (iv)] In an engine-electric locomotive having several t r a c t-i o n motors connectible to the generator in different ways, e.g. series - parallel, full parallel, and with or without the series fields shunted, and in which a load meter is provided for indicating the most efficient load range for each type of connection, the sensitivity of the meter is so varied with each change of connections that the meter scale dimensions for successive connections are adjacent one another and do not overlap. In the system shown, an engine E, having a load regulator L, SS controlled by a manual controller MPC, drives a generator G which supplies pairs of traction motors M1, M4 and M2, M3. A manually-operated transition controller MTC, associated with contactors S, P1, P2, PR, MS1 and MS2, permits the pairs of motors to operate in series with full or weakened fields and in parallel with full or weakened fields, the controllers MTC, MPC being interlocked to prevent movement of the former, when the latter is set for a high power. A shunt IS carrying the current of motor M4 energizes a power meter L1 having a scale divided into sections 1-4, Fig. 2, showing, respectively, the efficient load ranges corresponding to the four motor connections which may be established by controller MTC. To avoid overlapping between sections 2 and 1, and similarly 4 and 3, which would otherwise be necessary in the transition from full field to weakened field operation, the meter is recalibrated by the insertion of a resistor IR when the field shunts R1-R4 are switched in. Division 1 of the scale has a sub-division CR corresponding to maximum continuous load rating of the system and further sub-divisions showing the safe distance the locomotive may be operated intermittently at higher loadings.
Patent GB-309400-A (GB)
Title: Improvements in anti-dazzle devices for use with the lights of road vehicles
IPC: F21V11/16
Filed: 1927-12-09
Abstract: 309,400. Irving, A. J. Dec. 9, 1927. Divided application. Vehicle lamps; lantern screens.-A vehicle lamp is fitted internally with one or more transversely arranged wire-gauze screens having one or more openings through which light can pass in a forward direction without being screened. In the form shown in Fig. 1, a wire-gauze screen 1 has an opening 3 through which an electric lamp bulb can project, and is carried by a frame 2 which is resiliently held up against the surface of the lamp reflector, and at a distance from its mouth, by means of telescopic legs 6, as described in Specification 316,522. The transverse screens may be combined with one or more longitudinally arranged screens which may be flat and arranged vertically, cylindrical or otherwise curved, and may extend from the front glass to the reflector or to a distance from the reflector. Fig. 3 shows a perforated sheet-metal screen 8 and a wiregauze screen 9.
Patent GB-498205-A (GB)
Title: Improvements in or relating to air-tight closures for bottles, jars and the like
IPC: B65D45/32
Filed: 1937-10-25
Abstract: 498,205. Closures for jars &c. MITCHELL, W. G. Oct. 25, 1937, No. 29128. [Class 125 (iii ] A wad e of non-absorbent material is inserted to fill up the air space between the level of the top of the jar and the inside surface of the metal cap a; the wad fits within the annular sealing ring d. In an alternative form, the metal cap is dished or formed with a depression so as to fill up the air space formed by the indiarubber sealing ring. The wad is used either with screwed-on caps or with caps secured by a clamping ring c.